The Flyers said he will sidelined for four weeks. Pronger said it could be three to six weeks.

If the Flyers were playing in the Stanley Cupplayoffs, Pronger said, he would not have had the surgery and would have played through the pain. He wants to be 100 percent for the rest of the season and the playoffs.

As for the virus, Pronger said he has been experiencing headaches and nausea like never before. He revealed he had passed a concussion test.

Pronger has missed 10 games thus far this season; he missed 32 regular-season games in 2010-11, which he called "the year from hell."

"It's a little disheartening," Pronger said of his latest surgery. "It sets you back" after "you start getting into a rhythm."

The 6-foot-6 captain said his knee has been bothering him since he went out with his Oct. 24 eye injury.

In July of 2010, Pronger had surgery on the other knee. In that instance, it took about nine weeks before he played in a game. He said that surgery was more extensive because there was "more damage" to the knee.

In the last two years, Pronger has missed 42 regular-season games; the Flyers have won just 21 of them.

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Breakaways. The Flyers will play the Ducks in Anaheim Friday; it will be the first game for Bruce Boudreau as the Ducks' new coach. Boudreau, fired by Washington on Monday, has a career record of 201-88-40, a .672 winning percentage.....Jaromir Jagr, rebounding from a groin injury, is expected to return to the Flyers' lineup, while James van Riemsdyk is doubtful with an upper-body injury.....The Ducks swept the two-game series against the Flyers last season....The Ducks have killed 47 of 52 penalties (90.4 percent) in seven games at at the Honda Center.

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Follow Sam Carchidi on Twitter: @BroadStBull.

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